I’m aware it’s a very minor bug and even more so as I doubt it would come up in a typical game, but I allowed myself to be killed by a small crab whilst otherwise healthy and there was no reason listed on the death screen, just “You died from You survived 7 days.”
Volumetric Clouds Off
A custom island exists, but this was not encountered or tested on it
Get inappropriately frisky with a small crab
Tested this twice and on separate (real life) days as I have no life.